[DaveESL]

One important thing to do while giving a placement test is to use materials that reflect what students will actually be doing. So for an interview, I would try to take questions and themes from the books or other materials that the students will use in class. To test if they are at the intermediate level, ask them to read something from the intermediate textbook or ask them some questions from that book. When I did placement tests I would bring in books from each level and see which one fit the student best.